Hair-cutting machine



June 21 1927.

L. BERNARDUCCI HAIR CUTTING MACHINE Fileu b'ept. 11, 1925 2 Sheets-Sheet l l VENTOR AT'TORNEY 11 21' 1927. L, BERNARDUCCI HAIR CUTTING MACHINE 2 Shoots-Sheet 2' Filed Sept. 11. 1925 ////III INVENTOR @Q/Zm WITNESS:

Patented June 21,1927.

UNITED STATES LOUIS BERNARDUCCI, F BRONX, NEW YORK.

HAIR-CUTTING MACHINE.

Application filed September This invention relates to a motor driven hair clipper, the general object of the invention being to provide means whereby the device will start to clip the hair close and,

then gradually move away from the head and thus clip the hair farther from the head, so

that when the device is placed at the neck of the person having his hair cut and moved upwardly over the rear part of his head, the hair will be cut close at the beginning of the operation and gradually less close as the de-' vice moves upwardly, so that the hair will present a feathered effect at the back of the head.

Another object of the invention is to provide a pair of cutting disks on the device with means for giving them a step by step movement alternately and to provide the outer disk, which rests against the head, with teeth of gradually increasing thickness which controls the length at which the hair is to be cut. I

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and pecifically pointed out in the appended aims.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a view showing how the device is used.

Figure 2 is a section on line 2-2 of Figure 3.

' Figure 3 is a section on line 3-3 of Figure 2.

Figure 4 is a perspective view of the shaft and disk assembly.

' Figure 5 is a section on line 5-5 of Figure 2.

Figure 6 is a fragmentary view of one of the cutting disks, showing the rear thereof. Figure 7 is a diagrammatic view showin the arrangement of the teeth of the cutting disks.

Figure 8 is a top plan view of the outer cutting disk.

In these drawings, 1 indicates a. frame in which is 'journaled a shaft 2 and a hub 3, the hub being rotatably mounted on the shaft,

5 and a Geneva star wheel 4; is formed with 3 said hub and a similar wheel 5 is pinned to 11, 1925. Serial No. 55,837.

the shaft. A shaft 6 is journaled in the frame and carries the three disks 7, each disk being connected with the adjacent disk by a pin 8. These pins are arranged diametrically opposite each other and are designed to engage the slots in the star wheels, portions of the shaft between the disks being shaped, as shown at 9, to engage the curved recesses of the star wheels, as shown inv Figure 3. This is'the well known Geneva movement and it is not thought that it requires further description. However, it will be seen that when the shaft 6 is rotated, the star wheels will begiven a step by step movement alternately, so that first the shaft will be given a partial rotation and then the "hub. The shaft 6 projects from the casing 10 of the device and is squared so that it can be attached to the drive shaft 11 of an electric motor or the like. The casing carries the handle 12. An inner cutting disk 13 is connected with the hub by the toothed part 14, as shown in Figure 5 and an outer cutting disk 15 is connected with the shaft 2 by the screw 16, so that the. inner disk 13 will move with the hub and the star wheel 4 and the outer disk 15 will move with the shaft 2 and the star wheel 5. The disk 13 is provided with the cutting teeth 17 on its periphery and the disk 15 is provided with the cutting teeth 18 which cooperate-with the teeth 17 to cut the hair. Asshown in teeth 17 of disk 13 are of the same depth, but the teeth 18 of the disk 15 are arranged in groups with the teeth of the different groups gradually increasing in depth over the teeth of the preceding groups. I prefer to divide the teeth 18 into sixteen groups, the smallest teeth being one-half millimeter, those of the next group one millimeter and so on, the teeth increasing in size one-half a millimeter for each group, the largest teeth being eight millimeters in depth. 7

From the foregoing, it will be seen that due to the step by step movement of the cutting disks, the clipping action will take place on each movement of each disk and due to the formation of the outer disk 15 and its teeth, the hair will be cut at varying lengths as the device is passed over the hair covered surface, The device is placed with the small teeth on the surface where thehair is to-be clipped short and then as the device moves upwardly, the outer disk will rotate to bring the next group of teeth against the surface, so that the hair on this surface Figures 2 and 7, the

will not be clipped as close as at the starting point and this action will continue until the disk has almost made a complete revolution,

when-the largest teeth will engage the surface and the hair on this surface will be cut longer than that on an of the. other surfaces engaged by the device. With this 1 tion that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What I claim is 1. A hair cutter, comprising a frame, a pair of cutting disks, contacting with each other and supported by the frame to have rotary movement, cutting teeth on each disk and means for alternately rotating the disks step by step.

2. A hair cutter, comprising a casing, a pair of cutting disks rotatably supported by the casing and having cutting teeth at their peripheries, means for alternately rotating the disks step by step, the teeth of the outer disk being arranged in groups of gradually increasing depths so as "to cut the hair at different engths.

3. A hair cutter, comprising a casin a shaft journaled in the casing, a star wheel connected with'the shaft, a second star wheel rotatably mounted on the shaft, an inner cutting disk carried b the second star wheel, an outer cutting isk connected with the shaft, a drive shaft, disks thereon, pins carried by the disks, for engaging the star wheels to give the same step by step movements.

4. A hair cutter, comprising a casing, a shaft journaled in the casing, a star wheel connected with the shaft, :1 second star wheel rotatably mounted on the shaft, an inner cutting disk carried by the second star Wheel,

an outer cutting disk connected with the shaft, a drive shaft, disks thereon, pins carried by the disks for enga 'ng the star wheels to give the same step y step move-- ments, the outer disk having its cutting teeth arranged in groups of gradually increasing '6 thickness to cut the hair at different lengths.

In testimony whereof I have afiixed my signature.

LOUIS BERNARD-ricer 

